Hopefully someone else out there has had the same issue i'm currently having, and might be able to help with a resolution, but i'm thinking this might be a bug for Apple to fix. After updating my Late 2012 Mac Mini to Mavericks, the bonjour sleep proxy doesn't appear to be able to wake my computer from a sleep state when connected via ethernet. I can enable wifi, and the computer will show up again on my Macbook under shared devices while it's asleep. Previously, with Mountain Lion, ethernet worked fine. Actually, before tonight, I have never enabled wireless on my Mac Mini. I have tried to add "darkwake=0" to my boot.plist file with no success, sending WOL packets also refuse to wake the device. I have AirMedia center server loaded on the Mini, and attempting to access via my iPhone and iPad while the Mini is asleep fails. Enabling wifi on the Mini corrected that issue also. Any ideas? I'd rather use ethernet than wifi, but this temporary solution will work for the time being if nobody else has any ideas. If this is a bug, I sure hope Apple releases a fix soon!